Dialog Typing paves way for dialog to negotiate communication - - PowerPoint PPT Presentation

Dialog

Typing paves way for dialog to negotiate communication properties

• (All) Private types
• No Readable types
• No Modifiable types

Desired level

• f visibility/

control?

• Fewer private types
• Exe readable
• No modifiable types

Sender may choose an alternate path. Fail if no such path à reason in full view Network has upper hand, but visibility limits collateral damage

Reject Need exe Accept Pre-connection or in-band Sender NE Exe Checker Receiver

Progression of Communication

Sender Receiver NE2 Cookie sniffer NE3 Cookie sniffer NE1 Exe blocker

• 1. Route

discovery

• 2. Policy

discovery

• 3. Path

selection

• 4. Key exchange
• 5. Encrypted typed transfer
• 6. Message

reception